Description
Linux kernel before 2.6.25.2 does not apply a certain protection mechanism for fcntl functionality, which allows local users to (1) execute code in parallel or (2) exploit a race condition to obtain "re-ordered access to the descriptor table."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 4.0 | linux-2.6 | 2.6.18.dfsg.1-18etch4 | DSA-1575-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-53.1.19.el5 | RHSA-2008:0233 |
| RHEL 4 | kernel +10 | 2.6.9-67.0.15.EL | RHSA-2008:0237 |
| RHEL 3 | kernel +8 | 2.4.21-57.EL | RHSA-2008:0211 |
Advisories 4
- RHSA-2008:0233 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0237 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0211 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1575-1 linux-2.6 - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- 30276 third-party-advisory
- 30962 third-party-advisory
- SUSE-SA:2008:038 vendor-advisory
- 20080507 rPSA-2008-0162-1 kernel mailing-list
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.2
- https://issues.rpath.com/browse/RPL-2518
- SUSE-SA:2008:035 vendor-advisory
- RHSA-2008:0237 vendor-advisory
- ADV-2008-1451 vdb-entry
- ADV-2008-1452 vdb-entry
- MDVSA-2008:167 vendor-advisory
- USN-618-1 vendor-advisory
- 30982 third-party-advisory
- 29076 vdb-entry
- 30116 third-party-advisory
- RHSA-2008:0233 vendor-advisory
- 30110 third-party-advisory
- DSA-1575 vendor-advisory
- oval:org.mitre.oval:def:10065 vdb-entry signature
- FEDORA-2008-3873 vendor-advisory
- ADV-2008-2222 vdb-entry
- 30515 third-party-advisory
- USN-614-1 vendor-advisory
- 1019974 vdb-entry
- MDVSA-2008:105 vendor-advisory
- 30101 third-party-advisory
- 30164 third-party-advisory
- http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0162
- 30108 third-party-advisory
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.36.4
- 30252 third-party-advisory
- FEDORA-2008-4043 vendor-advisory
- RHSA-2008:0211 vendor-advisory
- FEDORA-2008-3949 vendor-advisory
- 30769 third-party-advisory
- 30077 third-party-advisory
- [Security-announce] 20080728 VMSA-2008-00011 Updated ESX service console packages for Samba and vmnix mailing-list
- linux-kernel-fcntlsetlk-dos(42242) vdb-entry
- MDVSA-2008:104 vendor-advisory
- 30260 third-party-advisory
- SUSE-SA:2008:030 vendor-advisory
- 31246 third-party-advisory
- 30818 third-party-advisory
- 30112 third-party-advisory
- SUSE-SA:2008:032 vendor-advisory